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000
FXHW60 PHFO 220550
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
750 PM HST Sun Apr 21 2024

.SYNOPSIS...
Moderate to breezy northeast to east trade winds will prevail
through the week, with clouds and showers favoring windward and
mauka locations overnight through the morning periods as areas of
moisture move through. The trade winds may ease slightly next
weekend as the ridge weakens to the north.

&&

.DISCUSSION...
Guidance remains in good agreement through the week and depicts
mostly benign conditions persisting with the subtropical ridge
remaining in place to the north. Moderate to breezy northeast
trades will continue through Monday, then shift out of the east
Monday night through Tuesday as a residual band of moisture moves
through. This band of moisture moving through will translate to
increasing windward shower coverage, with some showers making it
over to our leeward sections of the smaller islands.

The breezy trades may ease slightly Friday through next weekend
as the ridge weakens to the north in response to deep low pressure
developing far northwest of the state near Midway.

&&

.AVIATION...
Moderate to breezy trade winds will prevail during the next
couple of days as surface high pressure builds far north of the
islands. SHRA and some MVFR conds are possible for windward and
mauka locations. VFR conds will prevail over leeward areas.

AIRMET Sierra is in effect for mtn obsc for the Big Island. This
may need canceled as conds improve this evening.

AIRMET Tango in effect for mod turb for all islands.

&&

.MARINE...
High pressure north of the state will slowly drift east and
strengthen, resulting in strengthening trade winds over the Hawaii
region. A Small Craft Advisory is posted through Tuesday for the
typical windier waters around Maui and the Big Island.

Surf heights along all shores will remain below advisory thresholds
through the end of this week. A moderate, medium period north
swell will decrease on Monday before another medium period northwest
swell builds into the region from late Wednesday into Thursday.
Surf along east facing shores will rise and become choppy as trade
winds strengthen. South facing shores will continue to see small
background swell pulses through the week.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 PM HST Tuesday for Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.

&&
$$

DISCUSSION...Gibbs
AVIATION...Walsh
MARINE...Bohlin